<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>登录</title>
</head>
<body>
<p style="color: red">${msg}</p>
<form action="./user.do" method="get">
    <input type="hidden" name="action" value="login"/>
    用户名：<input type="text" name="username"/><br/>
    <button type="submit">登录</button>
</form>
</body>
</html>
